Method and apparatus for attaching cabinet backs

ABSTRACT

Two types of fasteners are used to provide a method of quickly and easily removing a cabinet back. One is a wing headed fastener with a generally &#39;&#39;&#39;&#39;T&#39;&#39;&#39;&#39; shaped cross section. The other fastener is a slip device, preferably having a somewhat &#39;&#39;&#39;&#39;top-hat&#39;&#39;&#39;&#39; configuration. A number of the slip device fasteners are attached, with the &#39;&#39;&#39;&#39;top-hat&#39;&#39;&#39;&#39; crown down, so that notches along one side of the back may be slipped under the hat brims of the fasteners. The wing headed &#39;&#39;&#39;&#39;T&#39;&#39;&#39;&#39; fasteners are attached to the back along the other three edges of the cabinet back. Thus, to replace the back, on the cabinet, it is only necessary to slip one edge under the brims of the slip fasteners. This brings the back into its properly aligned position; then, the back is pushed down over the wing headed &#39;&#39;&#39;&#39;T&#39;&#39;&#39;&#39; fasteners, which slip through keyhold slots in the back. The &#39;&#39;&#39;&#39;T&#39;&#39;&#39;&#39; fasteners are rotated, and the back is locked in its captured position.

United States Patent [1 1 Pabich [4 Oct. 16, 1973 METHOD AND APPARATUS FOR ATTACHING CABINET BACKS [76] Inventor: Richard W. Pablch, 604 Edgewood Dr., La Grange Park, 111. 60525 [22] Filed: Jan. 29, 1971 [21] Appl. No.: 110,829

[52] US. Cl 29/432, 29/434, 227/147,

312/7 [51] Int. Cl B23p 11/00 [58] Field of Search... 29/432, 434, 526;

Primary Examiner-Charles W. Lanham Assistant Examiner-J. W. Davie Att0rney-Alter, Weiss & Whitesel [5 7 ABSTRACT Two types of fasteners are used to provide a method of quickly and easily removing a cabinet back. One is a wing headed fastener with a generally T shaped cross section. The other fastener is a slip device, preferably having a somewhat top-hat configuration. A number of the slip device fasteners are attached, with the top-hat crown down, so that notches along one side of the back may be slipped under the hat brims of the fasteners. The wing headed T fasteners are attached to the back along the other three edges of the cabinet back. Thus, to replace the back, on the cabinet, it is only necessary to slip one edge under the brims of the slip fasteners. This brings the back into its properly aligned position; then, the back is pushed down over the wing headed T fasteners, which slip through keyhold slots in the back. The T fasteners are rotated, and the back is locked in its captured position.

9 Claims, 15 Drawing Figures Patented Oct. 16, 1973 2 Sheets-Sheet 1 R CH ATTORNEYS INVENTO RICHARD W. PAB! 41m Md BY Q169 Patnted Oct. 16, 1973 (PRIOR ART) INVENTOR RICHARD W PABICH I BY MW) ATTO RNEYS METHOD: AND APPARATUS FOR ATTACIIING CABINET BACKS This inventionrelates to cabinet production methods and processes, and, more particularly to apparatus for removably attaching the backs on cabinets for appliances, such as television receivers, according to the in ventive methods'andprocesses.

Reference, ismadeto U.S. Pat. No. 3,429,013, issued Feb. 25, 19.69,,to R. W. Pabich et' al., entitled IM- PROVEDWING HEADED FASTENER WITH TOOL ATTACHMENTS, AND METHOD FOR APPLYING FASTENER, and; assigned to'the assignee of this invention. This patent, and subsequent related applications, show pneumatictools for attaching wing headed fasteners to-attachthe backof an appliance, such as a televisioncabinet, for example. A particular advantage is thatthe cabinet backbothservesas its own template for precisely locating the fasteners and is simultaneously attachedto thecabinetwith no added labor required. These toolssavetime. and work, increase production, cutcosts, andsaddprofits. The resulting cabinet structure is easyandconvenientto assemble, disassemble, and reassemble.

After the wingheadedrfasteners are attached to the cabinet, thecabinet back may be removed quickly and easily bytwistingorturning each fastener so that it may passthrough akeyhole slot in the cabinet back. Then, the backis lifted away fromthecabinet. When the back is rep laced onthe cabinet, thezkeyholeslots are fitted.

over the fasteners, presseddown, andthe fasteners are turned torecapture; the; back. This-removal and. replacement procedure is quick and easy, as compared with the previous methods. of attachingthe back. On the other hand, it is not as quick and-easy as it could be. Somefumbling, fitting, and manipulationof the fasteners are still requiredto reposition the back on the receiver cabinet, for example. Here an object is to use the cabinet back as its own templatefor custom locating the fastenersfwhich removably attach the back to the cabinet. In particular, an object is to provide a way of slipping the cabinet back into an aligned position so that it will fit over the fasteners on the .back'of the cabinet.

Another object of theinvention is to provide a combination :of fastenersrwhich facilitate a quick and easy alignment ,of the cabinet back when it is removed and thereafter replaced on the cabinet.

Still another object is .-to"provide a single basic type of production tool whichmaybe modified easily for installingga combination, of fastener types, which accomplishthe foregoing objects.- I-Ierean object is to provide aplurality of tool types,;primarily from the same piece parts,,which canattach-eachof several types of fasteners.

Another object is 'to accomplish-all of the foregoing objects with a minimum required. capital: investment in orderto enter the-tool production business. Thus,.an object is. to'provide a universaltool design which may be manufactured onv generalpurposetools, with only minor investments required to convert to a specialized tool design.

In keeping with an aspect of the invention, these and other objects are accomplished through a use of two types of fasteners which may be attached to a cabinet by substantially the same type of tool. One type of fastener is a wing headed fastener having a generally Tf shapedcross section. The other type of fastener is a slip device, preferably having what may be termed a tophat configuration, for convenience of expression. The slip fastener device is attached to the cabinet with the top hat crown down. Notches or slip capture slots formed along one edge of the cabinet back may be slipped under the hat brims of a plurality of such devices. The wing headed fasteners are attached around the outer three edges of the cabinet back. Thus, to replace the back, it is only necessary to slip it under the brims and into its properly aligned position. Then, the back is pushed down, with keyhole slots fitting over the wing headed T fasteners, which slip through the slots. The T fasteners are rotated, and the back is locked in its captured position.

The nature of a preferred embodiment of the invention for accomplishing these and other objects may be understood best from a study of the following description and the attached drawing in which:

FIG. 1 is a side elevation view of a prior art wing headed fastener;

FIG. 2 is a plan view of the wing headed fastener, looking down along line 2-2 of FIG. 1;

FIG. 3 is a plan view of a strip of the prior art fasteners of FIG. 2;

FIG. 4 shows a keyhole slot in the back of a cabinet forreceiving one of the wing headed fasteners of FIG. 2.

FIG. 5 is a side elevation view of a slip fastener device having a. top hat configuration, used in conjunction with thewing headed fastener of FIG. 1.

FIG. 6 is a plan view of the top hat" slip fastener device of FIG. 5, showing the bottom of the fastener of FIG. 5 looking up from the plane of line 6-6 of FIG.

FIG. 7 shows how the slip fastener device of FIGS. 5 and 6 is positioned in a notch or slip capture slot in the cabinet back, and then the fastener is nailed into position;

FIG. 8 shows the manner in which the cabinet back may be slipped under or removed from a capture position with respect to the top hat slip fastener device of FIGS. 5 and 6;

' FIG. 9 shows the prior art tool for attaching the wing headed fasteners of FIGS. 1-3 in the key slot of FIG.

FIG. 10 shows a similar, but different, tool for attaching the tophat slip fastener device of FIGS. 5' and 6 in the slot of FIG. 7;

FIG. 11 is a fragmentary, partly cross-sectional, view of the working-end of the tool of FIG. 10, and

FIGS. 12l5'show the inventive process of attaching and removing the cabinet back with the inventive tool.

FIGS. 1 and 2 show a wing headed fastener 10 having a generally T shape cross section (the T shape is clearly visable in FIG. 1). The wing head or cross arms of the T capture the cabinet back, and the vertical stem'of the T passes through a keyhole slot in the back.

A plurality of these wing headed fasteners are joined into strips (FIG. 3) by a small web of material 11 extending between each adjacent fastener. Preferably, this strip of fasteners is molded from a suitable plastic which is mechanically strong and yet easily severed. Thus, the strip of fasteners may be inserted into a magazine 12 (FIG. 9) of a driving tool 13. A plurality of attaching devices, such as nails, are placed into a second magazine 14, also in tool 13. A horizontal spring pressure is applied to the fasteners and attaching devices or nails to press them toward (in the direction of arrow A) the front of the tool 13.

The fastener is attached to the cabinet when the trigger of the tool 13 is operated, while the fastener is properly positioned in a keyhole slot 16 in a panel, such as the back 17 of a television cabinet 18. The cabinet back is cross-hatched in FIGS. 4, 7 and 8 for easy identification. A nail, in magazine 14, is driven through a hole (FiG. 2) in fastener 10. The web 11 is severed as the fastener is attached. When the tool 13 is removed from the back of the cabinet, one wing headed fastener has been rotatably nailed to a base member (such as the back of the cabinet). At the time of nailing, the position of the wing headed fastener automatically captures the back.

To remove the back from the cabinet, these wing headed fasteners 10 are rotated by 90, as indicated at 19 (FIG. 13). When so rotated, the head of fastener 10 can pass through the keyhole slot 16. Thus, the cabinet back 17 may be lifted away from the cabinet 18. When the back 17 is returned to the cabinet 18, the wing headed fasteners 10 are again rotated by 90 to recapture the back, as shown in FIG. 4.

The wing headed fastener and tool described thus far are shown and described in the above-mentioned US. Pat. No. 3,429,013, and subsequent, related continuation patent applications.

This T" shaped, wing headed fastener functions very well, and it is a great step forward as compared with previous methods used for attaching the cabinet back. However, this use of wing headed fasteners also leaves some unresolved situational problems which open avenues for further improvements. Thus, for example, after the cabinet back is removed, a workman may touch and move the fasteners with his forearms, elbows, etc. and rotate the fasteners to off-normal positions. When the cabinet back is thereafter replaced, it v is necessary to realign the wing headed fasteners 10 before they will fit through the keyhole slots 16. This realignment sometimes leads to trial and error, fumbling, and other frustrating and time consuming efforts.

In keeping with an aspect of the invention, these and other problems are solved by the use of two different types of fasteners. One type of fastener is a slip device attached along one edge of the back of cabinet 18 to slidingly secure the back 17 into a properly aligned position. The wing headed fasteners are attached along the other three edges on the cabinet back. The difference between the inventive method and the prior art method is that the back is perfectly aligned at the time when the wing headed fasteners are turned to fit through the keyhole slots, as the back 17 is replaced on the cabinet 18. Therefore, a minimum amount of fumbling is required when the back is returned to the cabinet.

In greater detail, the slip fastener device 20 (FIGS. 5, 6) may take any suitable form and be made of any suitable material, preferably a material attracted to a magnet. The fastener 20 is here shown as having an enlarged head 21 at the top of a tubular stem 22. A passageway 23, concentrically positioned in the center of the stem 22, has an enlarged recess 24 for receiving the head of an attaching device, such as a nail 25.

Since this preferred slip fastener device has an appearance somewhat reminiscent of a top hat," it is sometimes called a top hat" fastener. Of course, many other configurations of the slip fastener device may serve also equally well (such as a mushroom shape, for example) as long as it enables the cabinet back to be slipped under a head of the fasteners.

The stem or hat crown 22 forms a length about equal to the thickness of the back. The enlarged head or hat brim 21 passes over the outside surface of the cabinet back 17, when it is in place on the back of the cabinet 18. Thus, the back may be secured to the cabinet by slipping a notch or slip capture slot slot 26, formed along the edge of the back 17, under the enlarged head or brim 21.

Thus, it now should be obvious that if the cabinet back 17 is slipped in direction B (FIG. 8) the material around slot 26 slides out from under the head 21 to release the back. When the back 17 is slid in direction C (FIG. 7), head 21 captures the back 17. The upper part d of the notch orslip capture slot 26 is wide enough to easily guide the back 17 into a desired capture position. The lower part e of the slip capture slot 26 fits loosely around the stem 22 of the fastener 20. FIG. 8 shows the fastener and back in the capture position.

FIG. 9 shows the prior art tool 13 used to attach the wing headed fasteners 10, as shown in FIGS. 1 and 2. The construction of this tool will be fully understood from a reference to the above cited prior art, patent and continuation applications, and from the foregoing description.

FIGS. 10 and 11 show the tool 30 used to attach the slip fastener device of FIGS. 5 and 6 to the back of the cabinet 18. In greater detail, the tool 30 includes a pneumatic tool head 31 having an air driven hammer therein, controlled by a trigger 32. A safety device 33 detects when the tool 30 is properly pressed against the back of a cabinet, with the fastener 20 in position in slot 26. This safely enables the trigger 32 to be pulled only when everything is so positioned.

A pair of support means or feet 34, 35 are attached to opposite ends of a bridge-like structure 36, which includes a magazine for supporting a plurality of nails and feeding them to a nailing position under the hammer (not shown) in head 31.

Formed in the foot 34, at the front of the tool, is a circular opening 37 having a diameter f which is slightly larger than the diameter of the head 21 on fastener 20. Thus, the head 21 loosely fits into the opening 37. A permanent magnet 38 (FIG. 11) is recessed into the opening 37 to hold a fastener 20, prior to its attachment to the cabinet. A hole 39, in magnet 38, has a diameter h, which is large enough to allow the passage of a nail and a hammer (not shown) in tool 30.

The nail 25 and hammer travel, in series, downwardly, in the direction J, through a nail chute 41 aligned with the hole 39 in the magnet 38. A pair of guide plates 42, 43 position and stabilize the nail chute 41. The nail chute 41 and guides 42, 43 are attached to the tool 30 by means of bolts 45, 46. A lock nut 47 on bolt 46 helps position and stabilize the foot plate 35.

In operation, the head 21 of the slip fastener 20 is positioned in hole 37 and held against the magnet 38 by its magnetic force. In this position, the center hole 23 is aligned with 39 in the magnet 38. Then, tool 30 (FIG. 12) is held with the stem 22 of fastener 20 positioned in the constricted area e (FIG. 6) of slot 26, on the back 17 of cabinet 18. If the stem 22 is properly located in the slot, the safety device 33 is pushed upwardly by the material of the back 17. This upward motion enables the tool 30 to operate.

Next, the trigger 32 is pulled and the hammer is actuated inside tool head 31. Responsive thereto, the nail 25, driven out of magazine 36, travels downwardly in direction J (FIG. 11), and through the hold 39, in magnet 38. The head of nail 25 has a diameter i which is small enough to pass through the hole 39 and sink down into recess 24 of the slip fastener device 20.

When the tool 30 is removed, the slip fastener device 20 has been nailed in position, as shown at 50 in FIG. 12. Then, the process is repeated, as often as required, to place a row of slip fastener devices entirely across one edge of the back of the cabinet.

Next, the wing headed fasteners of FIG. 1, 2 are attached around the remaining edges of the back of cabinet 18. Assuming the usual case of a rectangular back, these wing headed fasteners 10 will preferably be positioned around the side and bottom edges of the back (FIG. 13), while the slip fastener devices are along the top edge. When these fasteners are attached as disclosed in the prior art, they are in a transverse position (with respect to the keyhole slot), thereby capturing the back on the cabinet. This is the fastener position seenin FIG. 4.

Toremove the back (FIG. 15), each wing headed fastener is turned or rotated by 90 until it is aligned with the keyhole slot 16 (FIG. 4) in back 17. Then, the back 17 can be swung in the direction of arrow K (FIG. 15) to clear the wing headed fasteners 10. Once it is free of the fasteners 10, the back 17 may be slipped, in the direction of arrow L, outfrom under the slip fasteners 20.

To replace the back, the wing fasteners 10 are rotated until they appear to be aligned with the apparent keyhole slot 16. Then, the proper edge of the back 17 is slipped up (in the direction M) under the fasteners 20. This assures proper alignment of all fasteners and holes in the back 17. As the back is swung in the direction of arrow N, it is easy t'o'slightly turn the wing headed fasteners 10 to assurea final and proper alignment of the fastener and the keyhole slot.

Finally, after the back is properly positioned, as seen in FIG. 14, the fasteners 10 are again turned by 90 to recapture the back 17 in a closed position.

The foregoing specification has referred to specific parts in rather concrete terms since this facilitates an understanding of the invention. However, this precision of language is not to be interpreted as unduly limiting upon the invention. Various modifications and other embodiments will readily occur to those who are skilled in the art. For example, the shape of either or both of the fasteners 10 and 20 may be modified without appreciably changing its function. Moreover, the foregoing description has referred to a magnetic attraction between the magnet 38 and the slip fastener 20, which implies a use of steel or other metal fasteners. However, certain plastic materials have magnetic properties, and combinations of materials may also be used, such as an iron or steel head 21 on a plastic tube 22.

Hence, the appended claims are to be construed to cover all equivalent structures reasonably falling within the scope of the claims.

I claim:

I. A method for removably attaching a panel to a base member,

the method comprising the steps of:

a. forming said panel to have a plurality of keyhole slots along at least one edge and a plurality of notches or slip capture slots along at least one other edge,

b. positioning said panel on the base member,

c. attaching an inverted top hat" type of fastener through said slip capture slot to said base member to prevent the straight lifting up of said panel, said inverted top hat type of fastener having a generally inverted top hat shape with the crown of said top hat abutting said base member, and the brim displaced away from the base member a distance equal to the thickness of said panel so that,

d. attaching a first type of fastener through said keyhole slot to said base member, said first type of fastener being rotatable between a capture position and a release position, and

e. shaped to pass through said keyhole slot in one rotatable position and to capture said panel in another rotatable position,

f. said slip capture slot shaped to release said panel when said panel is slid away from under the brim of said inverted top hat" type of fastener,

g. providing power hammer tool means having a recessadjacent the hammer and aligned with the hammer stroke, said recess shaped to receive said inverted top hat type of fasteners,

h. providing said recess with locating means for retaining said inverted top hat type of fastener in said recess, and

. actuating said power hammer tool to drive an attaching device into said inverted top hat" type of fastener with sufficient force to remove said fastener from said locating means and attach it juxtaposed to said base member.

2. The method of claim 1 wherein said slip capture slot has a shape which is identical to a portion of said keyhole slot.

3. The method of claim 1 wherein said slip capture slot comprises a first part formed along said other edge of said panel and is shaped to guide said panel into a .capture position, and a second part which fits loosely around the crown of said top-hat fastener when said panel is in said capture position.

4. The method of claim 3 wherein said first type of fastener comprises an integral wing headed fastener having one part which rotatably fits within said keyhole slot and a second part which rotates between a release position aligned with said keyhole or a capture position extending over the panel.

5. The method of claim 4 wherein said panel is a cabinet back panel and said base member is a television cabinet.

6. A method for removably attaching a panel to a base member comprising the steps of:

a. forming said panel to have a plurality of keyhole slots along at least one edge and a plurality of notches or slip capture slots along at least one other edge, and

b. positioning said panel over a base member and attaching a first type of fastener through said keyhole slot to said base member and a second type of fastener through said slip capture slot to said base member, said first type of fastener being rotatable between a capture position and a release position, said first type of fastener being shaped to pass through said keyhole slot in one rotatable position and to capture said panel in another rotatable position, and said slip capture slot being shaped to re- 10 lease said panel when said panel is slid away from said second type of fastener,

. providing power hammer tool means having a recess adjacent said hammer and in line with the hammer stroke, said recess being shaped to receive one of said second type of fasteners,

d. locating a permanent magnet in said recess to attract and hold one of said second types of fasteners, said magnet having a central hole formed therein, and 10 e. actuating said tool to drive an attaching device through said hole in said magnet and into said one fastener attracted to said magnet.

7. The method of claim 6 wherein said attaching device is a nail with a head and said hole in said magnet is large enough to pass the head of said nail.

8. A method for removably attaching a panel to a base member comprising the steps of a. forming said panel to have a plurality of keyhole slots along at least one edge and a plurality of notches or slip capture slots along at least one other edge, said slip capture slot having a shape which is identical to a portion of said keyhole slot, said slip capture slot comprising a first part formed along said other edge of said panel and being shaped to guide said panel into a capture position,

b. positioning said panel over a base member and attaching a first type of fastener in said keyhole slot, said first type of fastener comprising an integral wing-headed fastener having one part which rotatably fits within said keyhole slot and a second part which rotates between a release position aligned with said keyhole or a capture position extending over the panel,

c. attaching a second type of fastener in said slip capture slot, said second type of fastener having a generally top hat shape with the crown attached to said base member and the brim displaced away from the base member by a distance which is approximately equal to the thickness of said panel,

(1. providing power hammer tool means having a recess adjacent said hammer and in line with the hammer stroke, said recess being shaped to receive one of said second types of fasteners,

e. locating a permanent magnet in said recess to attract and hold one of said second types of fasteners, said magnet having a central hole formed therein, and

f. actuating said tool to drive an attaching device through said hole in said magnet and into said one fastener attracted to said magnet,

said first type of fastener being movable between a capture position and a release position, said first type of fastener passes through said keyhole slot, and said slip capture slot being shaped to release said panel when said panel is slid away from said second type of fasteners.

9. The method of claim 8 wherein said attaching device is a nail with a head and said hole in said magnet is large enough to pass the head of said nail. 

1. A method for removably attaching a panel to a base member, the method comprising the steps of: a. forming said panel to have a plurality of keyhole slots along at least one edge and a plurality of notches or slip capture slots along at least one other edge, b. positioning said panel on the base member, c. attaching an inverted ''''top hat'''' type of fastener through said slip capture slot to said base member to prevent the straight lifting up of said panel, said inverted ''''top hat'''' type of fastener having a generally inverted ''''top hat'''' shape with the crown of said ''''top hat'''' abutting said base member, and the brim displaced away from the base member a distance equal to the thickness of said panel so that, d. attaching a first type of fastener through said keyhole slot to said base member, said first type of fastener being rotatable between a capture position and a release position, and e. shaped to pass tHrough said keyhole slot in one rotatable position and to capture said panel in another rotatable position, f. said slip capture slot shaped to release said panel when said panel is slid away from under the brim of said inverted ''''top hat'''' type of fastener, g. providing power hammer tool means having a recess adjacent the hammer and aligned with the hammer stroke, said recess shaped to receive said inverted ''''top hat'''' type of fasteners, h. providing said recess with locating means for retaining said inverted ''''top hat'''' type of fastener in said recess, and i. actuating said power hammer tool to drive an attaching device into said inverted ''''top hat'''' type of fastener with sufficient force to remove said fastener from said locating means and attach it juxtaposed to said base member.
 2. The method of claim 1 wherein said slip capture slot has a shape which is identical to a portion of said keyhole slot.
 3. The method of claim 1 wherein said slip capture slot comprises a first part formed along said other edge of said panel and is shaped to guide said panel into a capture position, and a second part which fits loosely around the crown of said ''''top-hat'''' fastener when said panel is in said capture position.
 4. The method of claim 3 wherein said first type of fastener comprises an integral wing headed fastener having one part which rotatably fits within said keyhole slot and a second part which rotates between a release position aligned with said keyhole or a capture position extending over the panel.
 5. The method of claim 4 wherein said panel is a cabinet back panel and said base member is a television cabinet.
 6. A method for removably attaching a panel to a base member comprising the steps of: a. forming said panel to have a plurality of keyhole slots along at least one edge and a plurality of notches or slip capture slots along at least one other edge, and b. positioning said panel over a base member and attaching a first type of fastener through said keyhole slot to said base member and a second type of fastener through said slip capture slot to said base member, said first type of fastener being rotatable between a capture position and a release position, said first type of fastener being shaped to pass through said keyhole slot in one rotatable position and to capture said panel in another rotatable position, and said slip capture slot being shaped to release said panel when said panel is slid away from said second type of fastener, c. providing power hammer tool means having a recess adjacent said hammer and in line with the hammer stroke, said recess being shaped to receive one of said second type of fasteners, d. locating a permanent magnet in said recess to attract and hold one of said second types of fasteners, said magnet having a central hole formed therein, and e. actuating said tool to drive an attaching device through said hole in said magnet and into said one fastener attracted to said magnet.
 7. The method of claim 6 wherein said attaching device is a nail with a head and said hole in said magnet is large enough to pass the head of said nail.
 8. A method for removably attaching a panel to a base member comprising the steps of a. forming said panel to have a plurality of keyhole slots along at least one edge and a plurality of notches or slip capture slots along at least one other edge, said slip capture slot having a shape which is identical to a portion of said keyhole slot, said slip capture slot comprising a first part formed along said other edge of said panel and being shaped to guide said panel into a capture position, b. positioning said panel over a base member and attaching a first type of fastener in said keyhole slot, said first type of fastener comprising an integral wing-headed fastener having one part which rotatably fits within said keyhole slot and a second part which rotates between a release position aligned with said keyhole or a captUre position extending over the panel, c. attaching a second type of fastener in said slip capture slot, said second type of fastener having a generally ''''top hat'''' shape with the crown attached to said base member and the brim displaced away from the base member by a distance which is approximately equal to the thickness of said panel, d. providing power hammer tool means having a recess adjacent said hammer and in line with the hammer stroke, said recess being shaped to receive one of said second types of fasteners, e. locating a permanent magnet in said recess to attract and hold one of said second types of fasteners, said magnet having a central hole formed therein, and f. actuating said tool to drive an attaching device through said hole in said magnet and into said one fastener attracted to said magnet, said first type of fastener being movable between a capture position and a release position, said first type of fastener passes through said keyhole slot, and said slip capture slot being shaped to release said panel when said panel is slid away from said second type of fasteners.
 9. The method of claim 8 wherein said attaching device is a nail with a head and said hole in said magnet is large enough to pass the head of said nail. 